bobbart,
Like you, I developed ED Post-Prostatectomy in February 2004.
Viagra, VED, MUSE, Injectons did not work satisfactorily for me.
Therefore, I underwent the Coloplast Titan Penile Implant Procedure in December 2007 and, thankfully, it completely corrected my ED snf restored both my sex life and the emotional intimacy with my wife of 45 years. After 4+ years, I would do it again in a heart-beat.
However, the final decsion is yours and yours alone.
Best of luck.
Bob